Last seen: Apr 8, 2025
My cylinder, buffer tank and the hot water circulating pump are in a room underneath my bedroom (which has become noticeably warmer). There was audibl...
That happened with my installation. Whoever had been sent to the plumbing suppliers to buy various parts got the wrong type of valve. Once the system ...
I've done a quick analysis of data collected by a pair of Elitech RC5+ temperature loggers for the period 20 - 22 January to look for defrosting cycle...
I very rarely hear my 7kW Arotherm+ but have twice heard it roar at the end of the defrosting cycle when it's blown out a cloud of fog. It's fitted un...
@Ajbevster If the OAT is reading 10C high then it might be possible to offset this by setting the target house temperature as 10C high until the OAT s...
@davidm06 I think 14C is better than 10C as it keeps a bit more heat in the house. I recall, without checking the documentation, that Vaillant defaul...
At a house temperature of 10C there won't be much thermal energy in the circulating water to make defrosting quick and easy. I wonder if the heat pump...
@jamespa: You might want to go easy on the abbreviations when someone is trying to understand how their heat pump works and may end up wondering why a...
@transparent Amazon, for some reason, isn't cooperating with me today and 2 of the 3 links I have posted aren't working properly. Search Amazon for "E...
@Alfapat: The inverter should provide the capability to ramp up the compressor speed but I notice that there is almost a factor of two difference betw...
@Richard24738 Thanks for the clarification. I await your conclusion.
Your system is worse than normal for something that has been very badly configured! My first thought is that you should turn up the radiator temperatu...
- 22 Forums
- 2,058 Topics
- 44.9 K Posts
- 37 Online
- 3,308 Members
Join Us!
Trusted Installers
Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.
✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available
Latest Posts
-
RE: Heat Pump Manufacturers Recommending Buffer Tanks
Good luck with this… I’d also suggest you start a new t...
By Mars , 10 minutes ago
-
RE: Planning Update: 1 Metre Boundary Rule for Heat Pumps Has Been Scrapped
This is indeed welcome news. In addition the new legi...
By JamesPa , 6 hours ago
-
RE: Is your heat pump insured?
@benson fairly typical of some insurers.
By KevinPotts , 17 hours ago
-
RE: Getting the best out of a heat pump - is Homely a possible answer?
@majordennisbloodnok I am wearing a glazed expression n...
By Toodles , 18 hours ago
-
RE: Rate the quality of your heat pump design and installation
Yes the HP is running weather compensation and I’ve lef...
By Davesoa , 1 day ago
-
RE: IVT Greenline high pressure switch and electrical cassette errors
OK, so when the HP comes on it becomes obvious.It's on ...
By tdudgeon , 2 days ago
-
RE: Is Your 6kW Air Source Heat Pump Really a 6kW?
@johnmo I think we’ve been trudging through the same...
By SUNandAIR , 2 days ago
-
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide
Good luck, I hope it all works out!
By JamesPa , 3 days ago
-
@johnd it's a difficult one, because we've seen instanc...
By Mars , 3 days ago
-
Win a 6-panel PV courtesy of egg and Renewable Heating Hub
Our epic giveaway just went live! Want to win a 6-pan...
By Mars , 3 days ago
-
RE: Yes, the "zoning with ASHP" topic again...
James, thanks again for your thoughtful and persistent ...
By HarryRea , 3 days ago
-
RE: Is this normal? Click of the DHW returning to space heating
So the Lone Ranger returned today! Even though we thoro...
By Grantmethestrength , 4 days ago
-
RE: Vaillant & OVO partner up to offer Heat Pump Plus
Hopefully iv done the right thing today by signing up t...
By Westkent , 4 days ago
-
RE: Battery sizing - How low can you go!
My own experience with connecting four batteries to thr...
By Transparent , 4 days ago
-
RE: Plate heat exchanger considerations
Work on 2-3 percent per degree. This is a reasonable e...
By JamesPa , 4 days ago
-
RE: Advice for ground source heat pump in new build with PV and batteries
The useful bit is the bit that specifies the heat loss ...
By JamesPa , 4 days ago
-
RE: Volumisers in Heat Pump Systems: Does Placement Matter?
You’re absolutely right that during defrost the refrige...
By Mars , 4 days ago
-
@editor thanks Mars that’s the same table I found in th...
By Gary , 5 days ago
-
RE: Tariff and charging strategy advice please
They haven't asked me to prove that I have an EV (I do)...
By JamesPa , 5 days ago